https://github.com/alwayslearningpls/haproxy

https://github.com/alwayslearningpls/haproxy

Last synced: 16 days ago
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• Host: GitHub
• URL: https://github.com/alwayslearningpls/haproxy
• Owner: alwayslearningPLs
• Created: 2022-09-16T03:20:23.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2022-09-28T03:41:21.000Z (over 2 years ago)
• Last Synced: 2024-11-06T15:50:13.145Z (2 months ago)
• Language: Shell
• Size: 46.9 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Learning HAProxy

HAProxy is an open-source load balancer. HAProxy listens for incomming requests and then

forwards them to one of your servers.

HAProxy atcs as both a _reverse proxy_ and a _load balancer_ for TCP-conected applications.

A _reverse proxy_ sits in front of your server and accepts requets from clients on its behalf.

If you have more than one server to redirect TCP connections, then you need a _load balancer_.

## How does it work?

HAProxy uses a _single-threaded_, _event driven_ architecture to receive requests from clients and dispatch them quickly to backend servers.

It does not open a thread and wait for a server to respond. Instead, it moves on to do other work and returns when it receives a callback.

## Interesting locations

- `/usr/sbin/haproxy`: it is the binary

- `/usr/share/lintian/overrides`: Lintian is a *Debian* package checker. The file here overrides rules that would otherwise cause the HAProxy package to be flagged as having an error. (not found).

- `/usr/share/doc/haproxy`: Documentation for HAProxy (It is needed to install the package `haproxy-doc`).

- `/run/haproxy`: Contains a UNIX socket that HAProxy binds to during startup.

- `/var/lib/haproxy`: Contains data that HAProxy stores while running.

- `/etc/logrotate.d/haproxy`: Configures HAProxy to use logrotate, which manages how logs are compressed and rotated.

- `/etc/default/haproxy`: Contains a default file for HAProxy that can override aspects of how the service starts up.

- `/etc/haproxy`: Contains the HAProxy configuration file and a directory where HTTP error pages are defined.

- `/etc/init.d/haproxy`: Contains the initialization script for the HAProxy service.

`/usr/sbin/haproxy -v` to get the version of HAProxy

## Labs

- [Hello world](./hello)

## Reference

TODO